Fix tests for `cask audit`.

Library/Homebrew/test/cask/audit_spec.rb

Library/Homebrew/test/cask/cmd/cat_spec.rb

...ry/Homebrew/test/support/fixtures/cask/Casks/adobe-air.rb

...Homebrew/test/support/fixtures/cask/Casks/auto-updates.rb

...y/Homebrew/test/support/fixtures/cask/Casks/basic-cask.rb

...t/support/fixtures/cask/Casks/latest-with-auto-updates.rb

...test/support/fixtures/cask/Casks/pkg-without-uninstall.rb

...mebrew/test/support/fixtures/cask/Casks/version-latest.rb

.../Homebrew/test/support/fixtures/cask/Casks/with-binary.rb

...test/support/fixtures/cask/Casks/with-installer-manual.rb

...Homebrew/test/support/fixtures/third-party/Casks/pharo.rb